<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<form action="http://localhost:5000/login" method="post">
    用 户 名：<input type="text" name="username"><br>
    密   码：<input type="text" name="password"><br>
    <button id="btn">登录</button>
</form>
<script src="../js/login.js"></script>
</body>
</html>